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CC1N7101en
27.11.2008

Building Technologies

HVAC Products

7

101

Burner Controls

LME...

Burner controls for the supervision of 1- or 2-stage gas or gas / oil burners of
small to medium capacity, operation, with or without fan in intermittent.

The LME… and this Data Sheet are intended for use by OEMs which integrate the
burner controls in their products.

Use, features

LME… burner controls are used for the startup and supervision of 1- or 2-stage gas or
gas / oil burners in intermittent operation. The flame is supervised by an ionization
probe or flame detector QRA… with ancillary unit AGQ3…A27 for gas / oil forced draft
burners or blue–burning flames with blue-flame detectors QRC...
In terms of housing dimensions, the LME... are identical with the LGB… and LMG…
burner controls (refer to «Type summary»).

-

For gas burners with or without fan to EN 298: 2003

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For gas burners with fans conforming to EN 676

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For oil burners to EN 230: 2005

-

Undervoltage detection

-

Air pressure supervision with functional check of the air pressure switch during
startup and operation

-

Electrical remote reset facility

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Multicolor indication of fault status and operational status messages

-

Limitation of the number of repetitions

-

Accurate control sequence thanks to digital signal handling

-

Controlled intermittent operation after 24 hours of continuous operation

Supplementary documentation

Product Range Overview LME…............................................................................ Q7101

Use

Features

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Содержание LME SERIES

Страница 1: ...l forced draft burners or blue burning flames with blue flame detectors QRC In terms of housing dimensions the LME are identical with the LGB and LMG burner controls refer to Type summary For gas burners with or without fan to EN 298 2003 For gas burners with fans conforming to EN 676 For oil burners to EN 230 2005 Undervoltage detection Air pressure supervision with functional check of the air pr...

Страница 2: ...of LME or the AGK20 lockout reset button extension only manually applying a force of no more than 10 N with out using any tools or pointed objects Fall or shock can adversely affect the safety functions Such units must not be put into operation even if they do not exhibit any damage Each time work has been carried out mounting installation service work etc check to ensure that wiring is in an orde...

Страница 3: ... unit or else the burner cannot reliably be started up For safety reasons feed the neutral conductor to terminal 2 Connect the burner components fan ignition transformer and fuel valves to the neutral distributor as shown below in figure The connection between neutral conductor and terminal 2 is prewired in the base Example 2 3 7 4 5 BV2 BV1 Z M N 7101a05 0804 Correct wiring of neutral conductors ...

Страница 4: ...r LME11 LME41 051 Max 3 repetitions LME2 LME41 052 LME41 053 LME41 054 LME41 071 LME41 09 LME44 Lockout at the end of TSA b Burner operation with simulated loss of flame For that purpose cut off the fuel supply LME11 LME41 051 Establishment of flame at the end of TSA Max 3 repetitions No establishment of flame at the end of TSA Lockout LME2 LME44 Lockout LME41 052 LME41 053 LME41 054 LME41 071 LME...

Страница 5: ... M C L X N LME44 A B L L X N Type LME11 230A2 x x LME11 330A2 x x x LME21 130A1 x x x LME21 130A2 x x x x LME21 230A2 x x x x LME21 330A1 x x x LME21 330A2 x x x x LME21 350A1 x x x LME21 350A2 x x x x LME21 550A2 x x x x LME22 131A2 x x x x LME22 231A2 x x x x LME22 232A2 x x x x LME22 233A2 x x x x LME22 331A1 x x x LME22 331A2 x x x x LME22 333A2 x x x LME23 331A2 x x x x LME23 351A2 x x x x LM...

Страница 6: ...mestic waste Local and currently valid legislation must be observed Mechanical design Units of plug in design like their predecessor types LGB and LMG refer to Dimensions The housing is made of impact proof heat resistant and flame retarding plastic It is of plug in design and engages audibly in the base The housing accommodates the microcontroller for the control sequence and the control relays f...

Страница 7: ...MG21 350B27 Ionization probe ION or flame detector QRA 4 with AGQ3 A27 LME21 550A2 AC 230 V 2 5 50 5 4 2 10 5 LGB21 550A27 Burner controls for 2 stage burners with actuator control LME22 131A2 AC 230 V 2 5 7 3 2 3 8 3 12 12 LGB22 130A27 LMG22 130B27 LME22 231A2 AC 230 V 2 5 20 3 2 3 8 3 12 12 LME22 232A2 AC 230 V 2 5 20 3 2 3 8 3 16 5 16 5 LGB22 230A27 LMG22 230B27 LME22 233A2 AC 230 V 2 5 20 3 2 ...

Страница 8: ...e ION or flame detector QRA 4 with AGQ3 A27 LME41 092A2 AC 230 V 2 5 1 10 9 1 X Burner controls for atmospheric burners LME44 056A2 AC 230 V 16 9 5 4 2 10 5 LGB41 255A27 LME44 057A1 AC 120 V 16 9 5 4 2 10 8 LGB41 258A17 Ionization probe ION or flame detector QRA 4 with AGQ3 A27 LME44 057A2 AC 230 V 16 9 5 4 2 10 8 LGB41 258A27 Legend tw Waiting time 1 Max running time available for actuator SA TSA...

Страница 9: ...20m at 100pF m Perm cable lengths other terminals Max 3m at 100pF m Perm terminal load At cosϕ 0 6 At cosϕ 1 Terminal 3 Max 2 7A 15A for max 0 5s only LME2 Max 3A Terminals 4 5 7 and 9 11 Max 1 7A Max 2A Terminal 10 Max 1A Max 1A Storage DIN EN 60721 3 1 Climatic conditions Class 1K3 Mechanical conditions Class 1M2 Temperature range 20 60 C Humidity 95 r h Transport DIN EN 60 721 3 2 Climatic cond...

Страница 10: ...d ground AC ammeter Ri 5 kΩ Max AC 50 150µA Max AC 100 300µA For applications outside the European Community operation at mains voltage AC 120 V AC 230 V 10 is ensured With the same quality of flame the detector current with the LME may be other than with the LMG LGB Flame supervision with ionization is accomplished by making use of the conductivity and rectifying effect of the flame The flame sig...

Страница 11: ...DC 280 V DC current detector signals with UV detector QRA Min required Max possible Measurement at the UV detector QRA 200µA 500µA In connection with LME A2 burner controls use of UV ancillary unit AGQ3 A27 is mandatory A Correct functioning of aged UV cells can be checked as UV test with a higher supply voltage across the UV cell after controlled shutdown until terminal 3 on Connection diagram Me...

Страница 12: ...d request for heat No undervoltage Air pressure switch LP must be in its no load position Fan motor or AGK25 is closed not at LME4 Flame detector is darkened and there is no extraneous light Air pressure switch LP must be in its no load position or DBR1 CPI in no load position or DBR2 Safety shutdown from the operating position takes place should mains voltage drop below about AC 85 V at UN AC 120...

Страница 13: ... welded in no load position LME41 LP is welded in no load position or no connection jumper between terminal 3 and terminal 11 Lockout max 65 s after completion of t10 No air pressure signal after completion t10 LME41 No air pressure signal after completion t10 or breakdown of jumper terminal 3 terminal 11 Lockout LME41 Safety shutdown restart CPI contact is open during tw Prevention of startup loc...

Страница 14: ...400 interface adapter and the ACS410 PC software or flue gas analyzers of different makes Visual diagnostics In normal operation the different operating states are indicated in the form of color codes according to the color code table given below During startup status indication takes place according to the following table Color code table for multicolor signal lamp LED Status Color code Color Wai...

Страница 15: ...kout position Lockout position Lockout position Error code table Red blink code of signal lamp LED AL at term 10 Possible cause 2 blinks On No establishment of flame at the end of TSA Faulty or soiled fuel valves Faulty or soiled flame detector Poor adjustment of burner no fuel Faulty ignition equipment 3 x blinks On LP faulty Loss of air pressure signal after t10 LP is welded in normal position 4...

Страница 16: ...ction diagram and control sequence LME11 NT RESET EK FSV ION 1 2 3 M 4 BV1 5 7 Z 10 AL T 12 R W GP STB 9 7101a24e 0708 pa 6 LP 8 EK2 11 K1 K2 1 K3 K2 2 H Si L N μC control SB R W GP AL M LP BV1 Z FS tw t1 t3n TSA t4 7101d04 0606 t10 EK2 12 10 3 7 4 6 1 8 t3 A B B C D 11 ...

Страница 17: ...L LP BV1 LR BV2 Z FS tw t1 t3n TSA t4 7101d05 0206 12 10 3 7 4 5 6 1 A B B C D t3 t10 M 11 Application examples only LME11 LME21 LME22 The suitable wiring schemes are merely examples which must be verified in the individual case depending on application Burner without fan and without LP Only for burner with fan control via auxiliary contactor HS with LP 2 3 11 6 7101a17 0804 AGK25 12 2 3 11 6 GP S...

Страница 18: ... 11 9 7 4 5 1 HS 0 I N L AL EK2 M LP GP SB R W Z BV1 LR ION BV2 N 1 2 6 7 5 4 3 b1 b2 B a b III a3 a b II MS I a b a2 a b IV A a b V RV LK 7101a10 0606 12 2 10 8 3 6 11 7 4 5 1 AL EK2 M LP GP SB R W Z BV1 LR ION BV2 HS N L 0 I N N 1 2 5 3 6 4 LK SA IV II MS I C3 D K2 C31 III R32 R1 V K1 a b a b a b b a a b 9 II KL Zu III LKP NL t1 IV III IV I t IV Si Si LME21 LME21 SQN3 121 2 stage control Note Wi...

Страница 19: ...22 LME23 NT RESET EK FSV ION 1 2 3 M 4 BV1 5 BV2 7 Z 10 AL T 12 R W GP STB 9 7101a02e 0708 pa 6 LP 8 EK2 11 K1 K2 1 K3 K4 K2 2 H Si SA L N QRC br bl sw 1 2 12 Nur LME23 K5 μC control SB R W GP AL LP SA BV1 LR BV2 Z FS tw t1 t3n TSA t4 7101d02 0606 t11 t12 EK2 12 10 3 7 4 5 6 1 8 A B B C D 9 t3 t10 LK M I 11 ...

Страница 20: ...III II KL Zu III LKP NL t1 III t I II t4 TSA 12 2 10 8 3 6 11 9 7 4 5 1 HS 0 I N L EK2 M LP GP R W Z BV1 LR ION AL N 1 8 2 7 5 6 3 4 9 B b1 b2 A a1 a2 I M II III V 5 LK RV 1 7101a14 0606 S1 BV2 2 SB R3 R1 Si Si LME22 LME22 SQN3 151 or SQN3 251 Note With 2 stage modulating burners with gas regulation damper RV BV2 and the dotted connection be tween terminals are not required SQN90 220 2 stage modul...

Страница 21: ...trol sequence LME41 NT RESET EK FSV ION 1 2 3 M 4 BV1 5 BV2 7 Z 10 AL T 12 R W GP STB 9 7101a02e 0708 pa 6 LP 8 EK2 11 K1 K2 1 K3 K4 K2 2 H Si SA L N QRC br bl sw 1 2 12 Only LME23 K5 μC control SB R W GP AL M LP BV1 Z FS tw t1 t3n TSA 7101d10 0408 t10 EK2 12 10 3 7 4 1 8 t3 A B B C D 11 t1 ...

Страница 22: ...d control sequence LME44 NT RESET EK FSV ION 1 2 3 M 4 BV1 5 BV2 7 Z 10 AL T 12 R W GP STB 7101a20e 0708 6 8 EK2 K1 K2 1 K3 K4 K2 2 H Si L N DBR2 without CPI ZV1 K5 11 CPI μC control SB R W GP AL ZV1 BV1 BV2 Z FS tw t1 t3n TSA t4 7101d06 0206 12 10 3 7 4 5 1 A B B C D t3 M 11 CPI 6 t22 ...

Страница 23: ...rmostat pressurestat RV Gas regulation damper SA Actuator SQN SB Safety limiter STB Safety limit thermostat Si External pre fuse t Time W Limit thermostat pressure switch Z Ignition transformer ZV Pilot gas valve A Start command switching on by R B B Interval for establishment of flame C Operating position of burner reached C D Burner operation generation of heat D Controlled shutdown by R Burner ...

Страница 24: ...11 2008 Dimensions Dimensions in mm 5 2 53 9 88 91 41 6 47 2 62 5 7101m02 0605 22 9 59 1 53 9 7130m05 0904 7 44 L Type reference Length L in mm AGK20 20 19 AGK20 43 43 AGK20 55 55 LME LME with extension of lockout reset button AGK20 Plug in base AGK11 AGK13 ...

Страница 25: ...2008 Dimensions cont d Dimensions in mm 90 5 60 220 69 6 A B 6 5 4 5 4 13 18 4 65 6 27 5 7101m01 0804 Ancillary unit AGQ3 A27 2008 Siemens Building Technologies HVAC Products GmbH Subject to change Type reference Dimensions A B AGQ3 1A27 500 19 AGQ3 2A27 300 34 ...

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